Before going to bed early this morning, Hillary Clinton paid a late-night visit to a laundry room at her Las Vegas hotel to court a group of union housekeeping workers -- a sign of just how intense the race for every single vote in Nevada has become.

Clinton, wearing her glasses, entered the brightly lit room at Caesar's Palace just after midnight today where four female workers from Culinary Union 226 were folding hotel room linens as part of their 5 p.m. to 1 a.m. shift. She immediately gave each of them a hug.

This was the third time Clinton met with workers from Las Vegas' Culinary Union in less than a week. The visit came just hours after a new CNN/ORC poll showed Clinton and her Democratic rival, Bernie Sanders, nearly tied in the state.

During the short visit, Clinton told the women that she appreciates all the work they do and asked them to caucus for her at 11 a.m. on Saturday. "You know you can caucus here?" she asked them.

A manager chimed in to clarify for the workers that they will have the time granted for the opportunity to caucus at the hotel if they so choose.

Clinton asked the women working at Caesar's Palace to caucus for her on Sat. Some were unaware it was even happening pic.twitter.com/7CmZl2kqC6